1 files changed, 6 insertions, 0 deletions

diff --git a/src/_props.scss b/src/_props.scss
index 5682611..59ecd58 100644
--- a/src/_props.scss
+++ b/src/_props.scss
@@ -35,6 +35,9 @@
         @return get($value, $key, $keys);
     }
     @if meta.type-of($value) == 'map' and $key != null {
+        @if meta.type-of($key) != 'string' {
+            @error 'Expected string, got #{$key}';
+        }
         @return get-deep(#{$name}#{$key}, map.get($value, $key), $keys...);
     }
     @return $name $value;
@@ -42,6 +45,9 @@
 
 @function map-to-vars($name, $map) {
     @if meta.type-of($map) != 'map' {
+        @if meta.type-of($name) != 'string' {
+            @error 'Expected variable name, got #{$name} instead';
+        }
         @return var($name);
     }